Adding another morning Metra express train to the C&M could really tax the physical plant beyond its current capabilities. Even with the bi-directional CTC setup on this two track railroad with several crossovers, capacity is still at a premium. With Amtrak trains frequently overtaking slower Metra locals, plus CP freight traffic going to/from Bensenville via A20, not to mention periodic cross traffic on the EJE at Rondout, the C&M dispatcher has more than enough to handle. And of course, all bets are off in the event of any delays. Not saying this is necessarily a bad idea, I just don't think it can readily applied to the current reality...
--Dorian--